Sunday, April 10, 2011

Outsmart the Wolf

Here's a brain teaser (h/t Rob):

You start at the center of a disc-shaped pond.  A wolf is at the edge of the pond, and the wolf runs four times as fast as you can swim.  He will always run along the edge toward the spot that's closest to where you presently are.  How do you get out of the pond without the wolf there to eat you?